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Information Content in the Oxygen A-Band for the Retrieval of Macrophysical Cloud Parameters

Schüssler, Olena and Loyola, Diego and Doicu, Adrian and Spurr, Robert (2014) Information Content in the Oxygen A-Band for the Retrieval of Macrophysical Cloud Parameters. IEEE Transactions on Geoscience and Remote Sensing, 52 (6), pp. 3246-3255. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TGRS.2013.2271986 ISSN 0196-2892

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Official URL: http://ieeexplore.ieee.org/xpl/abstractMetrics.jsp?arnumber=6563202

Abstract

Current and future satellite sensors provide measurements in and around the oxygen A-band on a global basis. These data are commonly used for the determination of cloud and aerosol properties. In this paper, we assess the information content in the oxygen A-band for the retrieval of macrophysical cloud parameters using precise radiative transfer simulations covering a wide range of geophysical conditions in conjunction with advance inversion techniques. The information content of the signal with respect to the retrieved parameters is analyzed in a stochastic framework using two common criteria: the degrees of freedom for a signal and the Shannon information content. It is found that oxygen A-band measurements with moderate spectral resolution (0.2 nm) provide two pieces of independent information that allow the accurate retrieval of cloud-top height together with either cloud optical thickness or cloud fraction. Additionally, our results confirm previous studies indicating that the retrieval of cloud geometrical thickness (CGT) from single-angle measurements is not reliable in this spectral region. Finally, a sensitivity study shows that the retrieval of macrophysical cloud parameters is slightly sensitive to the uncertainty in the CGT and very sensitive to the uncertainty in the surface albedo.

Item URL in elib:https://elib.dlr.de/88947/
Document Type:Article
Title:Information Content in the Oxygen A-Band for the Retrieval of Macrophysical Cloud Parameters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schüssler, Olenaolena.schuessler (at) dlr.deUNSPECIFIED
Loyola, Diegodiego.loyola (at) dlr.deUNSPECIFIED
Doicu, AdrianAdrian.Doicu (at) dlr.deUNSPECIFIED
Spurr, RobertRT SolutionsUNSPECIFIED
Date:June 2014
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:52
DOI :10.1109/TGRS.2013.2271986
Page Range:pp. 3246-3255
Editors:
EditorsEmail
Plaza, Antonio J.University of Extremadura, Caceres, Spain
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:Information content of hyperspectral measurements, oxygen A-band, retrieval of macrophysical cloud parameters
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Schüssler, Olena
Deposited On:28 Apr 2014 09:03
Last Modified:31 Jul 2019 19:46

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